Here's an update on using Java and OperaMini on the Clie TH55
Ther various instructions found on the web all tend to be confusing, so here are the details along with a basic recipe.
1. Can OperaMini run on the TH55?
ANS: Yes. Some versions will run on TH55 as long as a working Java Virtual Machine (JVM) is present.
2. Where can I get JVM for Palm OS 5.2 for the TH55?
ANS: The one JVM that I am sure works is the one originally packaged with a version of the IBM WebSphere Everyplace Micro Environment. This JVM is known as IBM J9. The IBM software was originally available through PalmOne until 1/12/2008 when PalmOne apparently relinquished the rights to distribute it. See http://www.palm.com/us/support/jvm/
. Other Java VMs may be available for Palm. See http://java-virtual-machine.net/other.html
. Some of the links are dead, however.
3. What files are needed for a working Java VM using IBM J9?
ANS: Two PRC files need to be synch'ed to the TH55.
4. Where can the files be obtained?
ANS: Currently, although there are several places to find IBM J9, most of the packages do not contain a J9JavaVMMidp20.prc (the runtime and launcher etc.) and j9pref.prc (the developer preferences panel) that will work in a Clie TH55, even though "Garnet OS" is explicitly supported. For example, Handango lists WebSphere Everyplace Micro
Environment v5.7.1 MIDP 2.0 for $5.99. I obtained this and it does not work with the TH55. The file size for the non-working J9JavaVMMidp20.prc is 1,654 KB and it is dated 12-20-2004. I also located a version 5.7.2, file size 1,655 KB dated 2-8-2007, equally non-working with the Clie TH55. The one link to a functional set of files for Clie TH55 is http://www.mrmuzg.internetdsl.pl/java.zip
. I am unsure which WebSphere Everyplace Micro
Environment version this represents, but the file size for the J9JavaVMMidp20.prc is 1,652 KB dated 7-21-2004.
5. Why don't the later versions work?
ANS: No clue.
6. What versions of OperaMini will run on the TH55 over the IBM Java VM
ANS: So far, I can only report that two Opera Mini versions work over IBM j9: opera-mini-basic-us.prc (for the Palm V) and opera-mini-advanced-us.prc (for the other Palm handhelds). These are available at http://www.operamini.com/download/pc/palm/
. It is also possible that Opera Mini 4 will work. The jar and jad files for this release are found at http://www.operamini.com/download/p...dvanced_midp_2/
and can be combined into a prc file using the jartoprc_w.exe tool found in the 5.7.2 Tools folder. I tested this, but was having trouble with hangs on a progress bar. I changed the stack size and some other settings, but haven't really had a reliable result yet.
7. How well does OperaMini run on a TH55
ANS: So-so. I think NetFront is actually somewhat better, but the OperaMini Advanced is quite elegant and worth installing.
8. So what do I have to do step-by-step?
a) Download and install by synch'ing J9JavaVMMidp20.prc and j9pref.prc from http://www.mrmuzg.internetdsl.pl/java.zip
b) Run Prefs on the Clie and select "IBM Java VM" interface from the dropdown. (I am not sure how to use "J9 Java Options" so I left it alone). Set Memory Maximum to 4 MB and Stack Size to 32Kb. These can probably be decreased, but I used these settings to start.
c. Download OperaMini, basic or advanced, from http://www.operamini.com/download/pc/palm/
. The basic version is only listed beside the Palm V. All others are the same advanced version.
d. Synch OperaMini, and run the program. Once a WLAN connection is made, the initial screens will adjust settings for you.